But Shaw's involvement in the World Cup for England meant that he travelled to United's pre-season tour of the United States short of full fitness.

He cut short his three-week break after the World Cup to return to United training a week early, but still felt he was not at the level he wants to be at.

With United's matches coming thick and fast in the United States, a large part of the first-team training is geared around playing games and recovery.

Shaw felt he needed more intensive pre-season fitness work and asked United officials whether he could do extra training with Strudwick to make sure he is in the best possible condition in time for the opening game against Swansea on Aug 16.

Van Gaal spoke personally to Shaw about the personal training programme and it is understood both men are happy with the agreement.